p_lx_elf.cpp in UPX 3.94 mishandles ELF headers, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a crafted binary file, as demonstrated by an Invalid Pointer Read in PackLinuxElf64::unpack().
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Upx | Upx | 3.94 (including) | 3.94 (including) |
| Upx-ucl | Ubuntu | artful | * |
| Upx-ucl | Ubuntu | esm-apps/xenial | * |
| Upx-ucl | Ubuntu | trusty | * |
| Upx-ucl | Ubuntu | upstream | * |
| Upx-ucl | Ubuntu | xenial | * |
| Upx-ucl | Ubuntu | zesty | * |